Mexico checks for oil link to death of 250 rays

Businessweek, 7/18/2013

Mexican authorities investigating the deaths of at least 250 rays found on a beach say they are studying whether work being done by the country’s national oil company in the Gulf of Mexico might have been involved.

Veracruz state fishing director Tomas Rubio says his office will try to determine if the rays were poisoned or otherwise affected by Petroleos Mexicanos. Rubio said Wednesday that there is no evidence so far Pemex caused the deaths.